Android第9周作业

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mb5fe3290a9b4fe 2021-10-14 18:36:00

文章标签 android xml ide bundle 用户名 文章分类 C/C++ 后端开发

1.使用数据传递实现用户注册,数据回传实现金额充值.

 1 <?xml version="1.0" encoding="utf-8"?>
 2 <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
 3     xmlns:tools="http://schemas.android.com/tools"
 4     android:layout_width="match_parent"
 5     android:layout_height="match_parent"
 6     android:orientation="vertical"
 7     tools:context=".MainActivity" >
 8 
 9     <LinearLayout
10         android:layout_width="wrap_content"
11         android:layout_height="wrap_content"
12         android:layout_marginLeft="100dp"
13         android:layout_marginTop="50dp">
14         <TextView
15             android:id="@+id/tv_1"
16             android:layout_width="50dp"
17             android:layout_height="wrap_content"
18             android:text="用户名:"/>
19         <EditText
20             android:id="@+id/et_1"
21             android:layout_width="120dp"
22             android:layout_height="wrap_content"
23             android:hint="请输入用户名"/>
24     </LinearLayout>
25 
26     <LinearLayout
27         android:layout_width="wrap_content"
28         android:layout_height="wrap_content"
29         android:layout_marginLeft="100dp"
30         android:layout_marginTop="10dp">
31         <TextView
32             android:id="@+id/tv_2"
33             android:layout_width="50dp"
34             android:layout_height="wrap_content"
35             android:text="密码:"/>
36         <EditText
37             android:id="@+id/et_2"
38             android:layout_width="120dp"
39             android:layout_height="wrap_content"
40             android:hint="请输入密码"/>
41     </LinearLayout>
42 
43     <TextView
44         android:id="@+id/t3"
45         android:layout_width="wrap_content"
46         android:layout_height="wrap_content"
47         android:layout_marginTop="50dp"
48         android:layout_marginLeft="50dp"
49         android:text="兴趣爱好:"/>
50 
51     <CheckBox
52         android:id="@+id/cb_1"
53         android:layout_width="wrap_content"
54         android:layout_height="wrap_content"
55         android:layout_marginTop="10dp"
56         android:layout_marginLeft="50dp"
57         android:text="编程"/>
58 
59     <CheckBox
60         android:id="@+id/cb_2"
61         android:layout_width="wrap_content"
62         android:layout_height="wrap_content"
63         android:layout_marginLeft="50dp"
64         android:text="下棋"/>
65 
66     <CheckBox
67         android:id="@+id/cb_3"
68         android:layout_width="wrap_content"
69         android:layout_height="wrap_content"
70         android:layout_marginLeft="50dp"
71         android:text="唱歌"/>
72     
73     <Button
74         android:id="@+id/btn_1"
75         android:layout_width="wrap_content"
76         android:layout_height="wrap_content"
77         android:layout_marginTop="50dp"
78         android:layout_marginLeft="150dp"
79         android:text="注册" />
80 
81 </LinearLayout>

 1 package com.example.week9;
 2 
 3 import android.os.Bundle;
 4 import androidx.appcompat.app.AppCompatActivity;
 5 import android.content.Intent;
 6 import android.view.View;
 7 import android.widget.Button;
 8 import android.widget.EditText;
 9 import android.widget.CheckBox;
10 import android.widget.CompoundButton;
11 import android.widget.Toast;
12 
13 public class MainActivity extends AppCompatActivity implements CompoundButton.OnCheckedChangeListener{
14 
15     String s1="",s2="",s3="";
16     private EditText et_1;
17     private Button btn_1;
18 
19     @Override
20     protected void onCreate(Bundle savedInstanceState) {
21         super.onCreate(savedInstanceState);
22         setContentView(R.layout.activity_main);
23 
24         et_1=findViewById(R.id.et_1);
25         btn_1=findViewById(R.id.btn_1);
26 
27         CheckBox cb1=findViewById(R.id.cb_1);
28         CheckBox cb2=findViewById(R.id.cb_2);
29         CheckBox cb3=findViewById(R.id.cb_3);
30         cb1.setOnCheckedChangeListener(this);
31         cb2.setOnCheckedChangeListener(this);
32         cb3.setOnCheckedChangeListener(this);
33 
34         btn_1.setOnClickListener(new View.OnClickListener() {
35             @Override
36             public void onClick(View view) {
37                 passDate();
38             }
39         });
40     }
41 
42     public void passDate(){
43         // 用intent封装数据并传递
44         Intent intent=new Intent(this,SecondActivity.class);
45 
46         intent.putExtra("name",et_1.getText().toString().trim());
47 
48         String text=s1+s2+s3;
49         intent.putExtra("text",text);
50         startActivity(intent);
51     }
52 
53     @Override
54     public void onCheckedChanged(CompoundButton cb, boolean isChecked) {
55         // TODO Auto-generated method stub
56         switch (cb.getId()) {
57             case R.id.cb_1:
58                 if (isChecked)
59                     s1 += "编程";
60                 else s1 = "";
61                 break;
62             case R.id.cb_2:
63                 if (isChecked)
64                     s2 += "下棋";
65                 else s2 = "";
66                 break;
67             case R.id.cb_3:
68                 if (isChecked)
69                     s3 += "唱歌";
70                 else s3 = "";
71                 break;
72             default:
73                 break;
74         }
75     }
76 }

 1 <?xml version="1.0" encoding="utf-8"?>
 2 <RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
 3     xmlns:tools="http://schemas.android.com/tools"
 4     android:layout_width="match_parent"
 5     android:layout_height="match_parent"
 6     tools:context=".SecondActivity" >
 7 
 8     <TextView
 9         android:id="@+id/tv_3"
10         android:layout_width="wrap_content"
11         android:layout_height="wrap_content"
12         android:layout_marginTop="80dp"
13         android:layout_marginLeft="150dp"
14         android:text="." />
15 
16     <TextView
17         android:id="@+id/tv4"
18         android:layout_width="wrap_content"
19         android:layout_height="wrap_content"
20         android:layout_marginTop="110dp"
21         android:layout_marginLeft="150dp"
22         android:text="" />
23 
24     <Button
25         android:id="@+id/btn_2"
26         android:layout_width="wrap_content"
27         android:layout_height="wrap_content"
28         android:layout_marginTop="150dp"
29         android:layout_marginLeft="150dp"
30         android:onClick="click"
31         android:text="我要充值" />
32 
33     <TextView
34         android:id="@+id/tv_4"
35         android:layout_width="wrap_content"
36         android:layout_height="wrap_content"
37         android:layout_marginTop="230dp"
38         android:layout_marginLeft="150dp"
39         android:text="" />
40 
41 </RelativeLayout>

 1 package com.example.week9;
 2 
 3 import androidx.appcompat.app.AppCompatActivity;
 4 import android.content.Intent;
 5 import android.os.Bundle;
 6 import android.view.View;
 7 import android.widget.TextView;
 8 
 9 public class SecondActivity extends AppCompatActivity {
10 
11     @Override
12     protected void onCreate(Bundle savedInstanceState) {
13         super.onCreate(savedInstanceState);
14         setContentView(R.layout.activity_second);
15 
16         Intent intent=getIntent();
17         String name= intent.getStringExtra("name");
18         String text="用户名:"+name;
19         ((TextView)(findViewById(R.id.tv_3))).setText(text);
20 
21         String xq=intent.getStringExtra("text");
22         String text1="兴趣爱好："+xq;
23         ((TextView)(findViewById(R.id.tv4))).setText(text1);
24     }
25 
26         public void click(View view) {
27         // 设置跳转到的Activity
28         Intent intent=new Intent(this,ThirdActivity.class);
29         startActivityForResult(intent,1);
30     }
31     @Override
32     protected void onActivityResult(int requestCode,int resultCode,Intent intent){
33         super.onActivityResult(requestCode, resultCode, intent);
34         if(requestCode==1&resultCode==2){
35             int rmb=intent.getIntExtra("rmb",0);
36             TextView textView=(findViewById(R.id.tv_4));
37             String text="充值金额为:"+rmb;
38             textView.setText(text);
39         }
40     }
41 }

 1 <?xml version="1.0" encoding="utf-8"?>
 2 <RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
 3     xmlns:tools="http://schemas.android.com/tools"
 4     android:layout_width="match_parent"
 5     android:layout_height="match_parent"
 6     tools:context=".ThirdActivity">
 7 
 8     <LinearLayout
 9         android:id="@+id/llt_1"
10         android:layout_width="wrap_content"
11         android:layout_height="wrap_content">
12         <TextView
13             android:id="@+id/tv_5"
14             android:layout_width="wrap_content"
15             android:layout_height="wrap_content"
16             android:layout_marginTop="100dp"
17             android:layout_marginLeft="100dp"
18             android:text="充值:"/>
19         <EditText
20             android:id="@+id/et_3"
21             android:layout_width="wrap_content"
22             android:layout_height="wrap_content"
23             android:layout_marginTop="100dp"
24             android:hint="请输入充值金额"/>
25     </LinearLayout>
26 
27     <Button
28         android:id="@+id/btn_3"
29         android:layout_width="wrap_content"
30         android:layout_height="wrap_content"
31         android:layout_marginLeft="150dp"
32         android:layout_below="@id/llt_1"
33         android:onClick="click2"
34         android:text="充值"/>
35 
36 </RelativeLayout>

 1 package com.example.week9;
 2 
 3 import androidx.appcompat.app.AppCompatActivity;
 4 import android.content.Intent;
 5 import android.os.Bundle;
 6 import android.view.View;
 7 import android.widget.TextView;
 8 
 9 public class ThirdActivity extends AppCompatActivity {
10 
11     @Override
12     protected void onCreate(Bundle savedInstanceState) {
13         super.onCreate(savedInstanceState);
14         setContentView(R.layout.activity_third);
15     }
16 
17     public void click2(View view){
18         Intent intent=new Intent();
19         TextView textView=(findViewById(R.id.et_3));
20         int rmb=Integer.parseInt(textView.getText().toString());
21 
22         intent.putExtra("rmb",rmb);
23         setResult(2,intent);
24         finish();
25     }
26 }